Cultivator blade



, y 1,634,531 July 54,1927- v f. R, BERGSTEN cuLTIvATon BLADE `Filed April 2e. 1926 Patented July 5, 1927.

PATENT OFFICE.

FRANK ROBERT BERGSTEN, F ELK RIVER, MINNESOTA.

CULTIVATOR BLADE.

Application filed April 26, 1926. Serial No. 104,579.

object is to provide a cultivator tooth or hoe of considerable strength although made of W inexpensive thin sheet metal.

In the accompanying drawing:

Fig. 1 is atop view of one of my improved cultivator blades. Y

Fig. 2 is a. side elevation of Fig. 1 with a bolt added.

Fig. 3 is a section on line 3-3 in Fig. 2.

Fig. 4 is a. plan view of a garden cultivator, also called a wheel hoe equipped with my invention.

Fig.` 5 shows the cultivator blade in a modified position.

Referring to the drawing by reference numerals, 5 designates the handles and 6 the usual arch of a frame 7 secured toY the handles and supported by one or two ground Wheels 8. The frame has at each side a horizontal plate 9 with one or two transverse slots 10.

In one of said slots in each plate is placed a bolt 11, on which is secured a horizontal lug 12 having a hole 13 for said bolt and be ing secured by rivets 14 to the curved rear end portion 15 of la normally vertically dis posed cultivator blade 16 the front half, 16, 555 of which has its lower edge cut away so as o pleted by the curved portion 15 of 1the blade..

To savematerial in forming the blade I give it a slit 23 which enables the wing 2G to be spread considerably out laterally. I further economize on material by using sheet metal so thin that the weakest point of the blade is re-enforced by a flat metal strip 24, secured by rivets 25. v

These newv cultivator blades are capable of exchange of position the same as in other cultivators. That` is to say they may be used as shown in Fig. 4 or they may be exchanged to the position indicated at 1G* and 2Ox in Fig. 5 so that they converge almost together at their rear ends in which' position it is` preferable to have one blade secured in the front slot 10 and the other in the rear slot 10 atr the other side of the cultivator as that will cause the trails of the blades 2OX to overlap slightly.

What I claim is:

1. A cultivator blade adapted to be secured to a cultivator, said blade consistingV of a metal blade havingan elongated normally vertical front portion with its upper edge slanting forwardly and downwardly and its lower edge arranged to ride practically on the surface of the ground, the rear half or portion of the blade being deeper and having a sharp cut-ting edge and a laterally divergingV inclined wing with a sharp front edge.

2. The structure specified in claim 1 in which said rear end portion of the blade has a lateral curve toward the same side that lhas the wing. to ride as at 17 just in contact with the y 3. The structure specified in claim 1, in

which the said wing has` a longitudinal reenf forcing strip secured upon its rearward side.

4. The structure specified in claim 1. in

which the said wing has a longitudinal reenforcing strip secured upon its rearward side, said plate having said wing partly cut loose and spread from the body of the plate, and la metal strip riveted to the plate and its wingY across the cut and having its upper end formed into a perforated lug by which to bolt the device to a cultivator frame.

In testimony whereof I aiiX my signature.

FRANK sonner 'BERGSTEN 

